Eric Dumazet f9bfe4e6a9 tcp: lack of available data can also cause TSO defer ... tcp_tso_should_defer() can return true in three different cases : 1) We are cwnd-limited 2) We are rwnd-limited 3) We are application limited. Neal pointed out that my recent fix went too far, since it assumed that if we were not in 1) case, we must be rwnd-limited Fix this by properly populating the is_cwnd_limited and is_rwnd_limited booleans. After this change, we can finally move the silly check for FIN flag only for the application-limited case. The same move for EOR bit will be handled in net-next, since commit 1c09f7d073 ("tcp: do not try to defer skbs with eor mark (MSG_EOR)") is scheduled for linux-4.21 Tested by running 200 concurrent netperf -t TCP_RR -- -r 60000,100 and checking none of them was rwnd_limited in the chrono_stat output from "ss -ti" command. Fixes: 41727549de ("tcp: Do not underestimate rwnd_limited") Signed-off-by: Eric Dumazet <edumazet@google.com> Suggested-by: Neal Cardwell <ncardwell@google.com> Reviewed-by: Neal Cardwell <ncardwell@google.com> Acked-by: Soheil Hassas Yeganeh <soheil@google.com> Reviewed-by: Yuchung Cheng <ycheng@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2018-12-07 16:18:22 -08:00
..
bpfilter
netfilter	netfilter: nat: fix double register in masquerade modules	2018-11-27 00:36:46 +01:00
af_inet.c
ah4.c
arp.c
cipso_ipv4.c
datagram.c
devinet.c
esp4_offload.c
esp4.c
fib_frontend.c
fib_lookup.h
fib_notifier.c
fib_rules.c
fib_semantics.c
fib_trie.c
fou.c
gre_demux.c
gre_offload.c
icmp.c
igmp.c
inet_connection_sock.c
inet_diag.c
inet_fragment.c	inet: frags: better deal with smp races	2018-11-08 18:40:30 -08:00
inet_hashtables.c	mm: remove include/linux/bootmem.h	2018-10-31 08:54:16 -07:00
inet_timewait_sock.c
inetpeer.c
ip_forward.c
ip_fragment.c	ipv4: ipv6: netfilter: Adjust the frag mem limit when truesize changes	2018-12-05 20:44:46 -08:00
ip_gre.c
ip_input.c	net: use skb_list_del_init() to remove from RX sublists	2018-12-05 16:22:05 -08:00
ip_options.c
ip_output.c	net: always initialize pagedlen	2018-11-24 17:42:57 -08:00
ip_sockglue.c	net: bpfilter: fix iptables failure if bpfilter_umh is disabled	2018-11-05 17:12:18 -08:00
ip_tunnel_core.c	ip_tunnel: don't force DF when MTU is locked	2018-11-17 21:50:55 -08:00
ip_tunnel.c
ip_vti.c
ipcomp.c
ipconfig.c
ipip.c
ipmr_base.c
ipmr.c
Kconfig
Makefile
metrics.c
netfilter.c
netlink.c
ping.c
proc.c
protocol.c
raw_diag.c
raw.c
route.c
syncookies.c
sysctl_net_ipv4.c
tcp_bbr.c
tcp_bic.c
tcp_bpf.c
tcp_cdg.c
tcp_cong.c
tcp_cubic.c
tcp_dctcp.c
tcp_dctcp.h
tcp_diag.c
tcp_fastopen.c
tcp_highspeed.c
tcp_htcp.c
tcp_hybla.c
tcp_illinois.c
tcp_input.c	tcp: address problems caused by EDT misshaps	2018-11-24 17:41:37 -08:00
tcp_ipv4.c
tcp_lp.c
tcp_metrics.c
tcp_minisocks.c
tcp_nv.c
tcp_offload.c
tcp_output.c	tcp: lack of available data can also cause TSO defer	2018-12-07 16:18:22 -08:00
tcp_rate.c
tcp_recovery.c
tcp_scalable.c
tcp_timer.c	tcp: fix SNMP TCP timeout under-estimation	2018-11-30 17:22:41 -08:00
tcp_ulp.c
tcp_vegas.c
tcp_vegas.h
tcp_veno.c
tcp_westwood.c
tcp_yeah.c
tcp.c	mm: remove include/linux/bootmem.h	2018-10-31 08:54:16 -07:00
tunnel4.c
udp_diag.c
udp_impl.h
udp_offload.c
udp_tunnel.c
udp.c	mm: remove include/linux/bootmem.h	2018-10-31 08:54:16 -07:00
udplite.c
xfrm4_input.c
xfrm4_mode_beet.c
xfrm4_mode_transport.c
xfrm4_mode_tunnel.c
xfrm4_output.c
xfrm4_policy.c
xfrm4_protocol.c
xfrm4_state.c
xfrm4_tunnel.c